Dynarex LabChoice Glass Test Tubes are constructed to reliably contain, store, or mix chemicals, microorganisms, fluids, and other substances for use in laboratory environments. These Test Tubes are molded from high-quality borosilicate glass for enhanced chemical resistance and reduced risk of contamination. These Tubes feature uniform, rounded bottoms for improved reliability. The smooth, fire-polished rims are crafted for enhanced safety. Dynarex LabChoice Glass Test Tubes are made from transparent materials to provide optimal clarity and visibility of contents.   250 PER BOX, 8 BOXES PER CASE